.bottom {
    width: 100%;
    background-color: #fff;
    position: fixed;
    left: 0;
    bottom: 0;
    z-index: 99;
    padding: 3px 0 0;
}

.nav {
    display: flex;
    justify-content: space-between;
}

.nav .nav_N {
    display: block;
    width: 25%;
    height: 54px;
    text-align: center;
    font-size: 14px;
    padding-top: 2px;
}

.nav .nav_N a {
    color: #3e9bf2;
}

.nav .nav_N a i {
    font-size: 22px;
}

.nav .nav_N.active {
    color: #ccc;
    /*border-radius: 6px;*/
    /*background-color:#669eff;*/
}

.nav .nav_N.active a {
    color: #3e9bf2;
}
